138 MESOZOIC FLORAS OF UNITED STATES. 



and show no trace of nervation. Thej' are oblong elliptical in form, 

 and at the tips are prolonged into an apparent beak. They are too 

 large for seeds of cycads. The form given in PL XXXVII, Fig. 7, is 

 35 mm. long and 14 mm. wide in its widest portion. That shown in 

 Fig. 8 is 3 cm. long and of the same width as that given in Fig. 7, but 

 is more broadly elliptical. These objects look strikingly like the pyri- 

 form axis inclosed by the bracts of the involucre of what Saporta thinks 

 is the male flower of Williamsonia gigas. They may be compared with 

 the form given by Saporta in Plantes Jurassiques, Vol. IV, pi. xix, fig. 2. 

 These pyriform objects seem often to have been detached from the 

 involucres, and then would appear in the form shown by the Oregon 

 fossils. Such an object may be inclosed by the infolded bracts of the 

 fossil described in this paper as Williamsonia oregonensis. As there 

 is no way of connecting them with Williamsonia, I describe them as 

 Carpolithus. 



Caepolithus BrcKLAXDii AYilliamson? 

 PL XXXVII, Fig. 9. 



1836. Carpolithe.s BucMandii Willn. in Lindley & Tlutton: Foss. FL Gt. Brit., 

 Vol. Ill, p. 103, pL Ixxxix, figs. 3, .5. 



A large nut-like object was obtained from locality No. 7 that much 

 resembles the Carpolithes Bucklandii Willn. figured by Lindley and 

 Hutton. The base of the Oregon fossil is not shown, so it can not be 

 compared with that of the English fossil. The latter, as given by Lind- 

 ley and Hutton, shows on its surface a number of sharply defined promi- 

 nences quite regularly formed. None such appear on the Oregon plant. 

 Its surface is irregularly roughened, but the prominences are ill defined; 

 In a few there are papillse somewhat like those on the English fossil. 

 The plant matter of the Oregon fossil is stripped off from the rock, and 

 no doubt if the original surface had been preserved it would present 

 a different aspect from that now shown. All that can be said is that 

 the fossil has a suggestive resemblance to that of Lindley and Hutton. 



The nut is quite large, being 4 cm. long and 22 mm. wide near the 

 base. It is ovate in form and seems to narrow at the summit into a 

 beak, but the end is not well preserved. 



